汽车典型超高强钢零件几何结构对扭转回弹的影响规律  

Influence laws of geometric structure on twist springback for automobile typical parts of ultra-high-strength steel

作　　者：王俊杰 张建 袁志鹏 陈新平 胡志力[1,2] Wang Junjie;Zhang Jian;Yuan Zhipeng;Chen Xinping;Hu Zhili(Hubei Key Lalwratory of Advanced Technology for Automotive Components,School of Autometive Engineering,Wuhan University of Technology,Wuhan 430070,China;Hubei Collaborative Innovation Center for Automotive Components Technology,School of Autometive Engineering,Wuhan University of Technology,Wuhan 430070,China;Research Institute,BaoShan Iron&Steel Co.,Ltd.,Shanghai 201900,China;State Key Laboratory of Development and Application Technology of Automotive Steels(BaoSteel),Shanghai 201900,China)

机构地区：[1]武汉理工大学汽车工程学院现代汽车零部件技术湖北省重点试验室,湖北武汉430070 [2]武汉理工大学汽车工程学院汽车零部件技术湖北省协同创新中心,湖北武汉430070 [3]宝山钢铁股份有限公司研究院,上海201900 [4]汽车用钢开发与应用技术国家重点试验室(宝钢),上海201900

出　　处：《锻压技术》2021年第3期49-55,共7页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(51775397);国家重点研发计划项目(2019YFB1704501);高等学校学科创新引智计划资助项目(B17034);湖北省技术创新专项重大项目资助(2019AAA007);武汉市科技成果转化专项(2019030703011511)。

摘　　要：以A柱上内板零件为例,研究零件几何结构对成形后扭转回弹的影响规律。根据零件设计流程,将A柱上内板分为横截面和纵轴线,分别以横截面和纵轴线的结构参数为变量、以扭转回弹为响应建立响应面模型,分析各结构参数对扭转回弹的影响规律。结果表明,横截面中的直线1、直线3、角度2和角度4对扭转回弹具有显著影响。随着直线1和角度2的增大,扭转回弹值不断增大;随着直线2的增大,扭转回弹值先减小、后增大;随着角度4的增大,扭转回弹值先增大、后减小,且获得的最大扭转回弹值为0.215、最小扭转回弹值为0.050。纵轴线中,随着总长、弧直比的增大和半径的减小,扭转回弹值不断增大,且获得的最大扭转回弹值为0.199、最小扭转回弹值为0.073。For A-pillar upper inner plate part,the influence law of geometric structure of part on the twist springback after forming was studied. Then,according to the design process of part,the A-pillar upper inner plate was divided into cross-section and longitudinal axis,and taking the structural parameters of cross-section and longitudinal axis as variables and the twist springback as the response,the response surface model was established to analyze the influences of various structural parameters on the twist springback. The results show that the straight line 1,straight line 3,angle 2 and angle 4 in the cross section have a significant effect on the twist springback,the twist springback increases with the increasing of the straight line1 and angle 2,the twist springback decreases first and then increases as the straight line 2 increases,the twist springback increases first and then decreases as the angle 4 increases,and the maximum and minimum values of twist springback are 0. 215 and 0. 050 respectively. In addition,the twist springback increases continuously with the increasing of the total length and the ratio of arc to straight line and the decreasing of radius in the longitudinal axis,and maximum and minimum values of twist springback are 0. 199 and 0. 073 respectively.

关 键 词：车身构件 高强钢 扭转回弹 几何结构 响应面分析 

分 类 号：TG386.3[金属学及工艺—金属压力加工]